cnidarians & ctenophoras

Question 1

what are most cnidarias

Answer 1

marine

Question 2

hydras are found in

Answer 2

freshwater

Question 3

outer ?

inner ?

Answer 3

epidermis

gastro dermis

Question 4

tentacles surround what?

Answer 4

the mouth

Question 5

stinging cells are found where?

Answer 5

tentacles

Question 6

cnidocytes contain poison to

Answer 6

paralyze prey

Question 7

secretes digestive juices into gastro vascular cavity

Answer 7

inner gastro dermis

Question 8

digests food and circulates nutrients

Answer 8

gastro vascular cavity

Question 9

food is digested outside of cells

Answer 9

extracellular digestion

Question 10

help in directional movement and capturing prey

Answer 10

muscles

Question 11

scyphozoans ex

Answer 11

jellyfish

Question 12

anthozoans ex

Answer 12

sea anemones, corals

Question 13

hydrazoan ex

Answer 13

hydra

Question 14

cubozoa ex

Answer 14

box jellies

Question 15

jellyfish’s dominant body form

Answer 15

medusa

Question 16

most corals are

Answer 16

Colonial

Question 17

? live inside the coral, providing food and help to eleminate waste through photosynthesis

Answer 17

algae

Question 18

corals grow best where ?

Answer 18

tropical, well lit, clear water

Question 19

when corals become colorless

Answer 19

coral bleaching

Question 20

hydras reproduce by

Answer 20

budding

Question 21

hydras live in

Answer 21

freshwater

Question 22

how many species of Ctenophoran are there

Answer 22

100

Question 23

what type of symmetry do Ctenophorans have

Answer 23

radial

Question 24

how many species of phylum Cnidaria are there?

Answer 24

9,000

Question 25

stinging capsule

Answer 25

nematocysts

Question 26

what type of skeleton do cinidarians have

Answer 26

hydrostatic

Question 27

a gelatinous or jellylike layer between the epidermis and gastro dermis

Answer 27

mesoglea

Question 28

how do hydra and sea anemone move about on the sea floor

Answer 28

by gliding on their basal discs

Question 29

digestion that occurs in cnidarias

Answer 29

extracellular

Question 30

free-swimming larva

Answer 30

planula

Question 31

true jellyfish class

Answer 31

scyphozoa

Question 32

dominant body form of true jellyfish

Answer 32

medusae

Question 33

what does dioecious mean

Answer 33

seperate sexes

Question 34

juvenile medusae in the series of buds

Answer 34

strobila

Question 35

break loose and grow into mature sexual medusae

Answer 35

ephyrae

Question 36

what does the sea anemone feed on

Answer 36

fish or anything of suitable size

Question 37

what type of symbiotic relationship does the sea anymore have with clown fish, anemone, and hermit crabs

Answer 37

mutualistic

Question 38

how did Ctenophoras get their name

Answer 38

it’s 8 rows of ciliated plates

Question 39

sticky substance that is used in prey capture

Answer 39

colloblasts

Question 40

4 classes of the phylum Cnidaria

Answer 40

Hydrozoa
scyphozoa
cubozoa
authozoa

Question 40

2 basic body forms or styles of cnidarias

Answer 40

medusa

polyp

Question 40

gastro vascular cavity

Answer 40

coelenteron

Question 40

polyp body form
structure:
tentacles location:
mouth location:

Answer 40

tubular
around the mouth
at the end of the body

Question 40

medusa body form
structure:
tentacles location:
mouth location:

Answer 40

umbrella
extend from rim of umbrella
centered on the concave side

Question 40

trigger like structure of the cnidocyte

Answer 40

cnidocil

Question 40

the primitive nervous system of cinidarians

Answer 40

nerve net

Question 40

extension that contains the mouth

Answer 40

manubrium